Mark 7:18-20

And he saith unto them, Are ye so without understanding also? Perceive ye not, that whatsoever from without goeth into the man, it cannot defile him; because it goeth not into his heart, but into his belly, and goeth out into the draught? This he said, making all meats clean. And he said, That which proceedeth out of the man, that defileth the man.